What should I do?
I need some advice on a troublesome lawn. The lawn was hydroseeded in fall 2008. It started out great until we had some spots yellow last summer along the driveway. I figured it wasn't getting enough water. I was pretty much watering 15 minutes every day. This year after reading more I started out watering once a week for an hour. We've had unusually hot/humid weather already starting in mid June and the spots have come back with a vengeance. From reading, I'm certain it's summer patch. Most of it happens so fast, but I did notice some areas turn gray first, then yellow. Some areas have had some grass grow back, but I can see it spreading in different areas throughout the yard. The front and side by the garage are where it's happening, all in full sun. The back and other side get good shade and are fine. A couple weeks ago I went to watering twice a week for 45 minutes, but that hasn't helped. As background, the lawn was hydroseeded (new lot) in fall 2008. It was backfilled with sand to bring it up to the street and topped with a couple inches of soil. I mulch mow to around 2.5". Digging up some spots in different areas of the yard shows 3-4 inches of good looking soil in most of the yard, though the worst spot in the middle has some spots that have mostly sand. I'm worried that the lawn is going to be gone by fall. Is there anything I can do now? And what should my plan of attack be to get rid of this? I know in the spring I noticed we have a lot of thatch already, probably from the light sprinkling last year and possibly the 3 applications of starter fertilizer in 2 months when the lawn was seeded (at the builders suggestion). I have a thatch rake that I've used a little bit so far. Should that be good enough to use in the fall or should I rent a power rake? And should I aerate also? I was thinking of aerating and overseeding after that.